不稳定的Wifi连接Ubuntu 14.04
我在askUbuntu中读过其他问题，但由于我不熟悉Linux，因此无法解决问题。
问题是Ubuntu 14.04上的Wifi连接不稳定。 它确实连接到wifi一段时间，但5分钟后它就找不到大多数网络（它确实找到了一些）。
我刚刚从鼠标电脑上买了它。 但它在Windows 8.1（双启动）中是稳定的，所以似乎不是硬件问题。
我试过下面的解决方案。
-
在/etc/modprobe.d/iwlwifi.conf中添加“options iwlwifi 11n_disabled = 1”
-
忽略IPv6
-
重启NetworkManager
他们都没有解决问题。
下面是我的Ubuntu的信息。
======== Wireless-Info START ======== System-Info ~~~~~~~~~~~~~~~~~~~~~~~~ yuu 3.13.0-37-generic x86_64, Ubuntu 14.04.1 LTS, trusty CPU : Intel(R) Core(TM) i7-4712MQ CPU @ 2.30GHz Memory : 15971 MB Uptime : 21:43:43 up 1:48, 1 user, load average: 0.05, 0.05, 0.05 lspci ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 0c) Subsystem: QUANTA Computer Inc Device [152d:0999] Kernel driver in use: r8169 -- 09:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter [10ec:b723] Subsystem: Realtek Semiconductor Co., Ltd. Device [10ec:b729] Kernel driver in use: rtl8723be lsusb ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Bus 002 Device 002: ID 8087:8000 Intel Corp. Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 002: ID 8087:8008 Intel Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 003 Device 004: ID 0bda:b002 Realtek Semiconductor Corp. Bus 003 Device 007: ID 058f:6387 Alcor Micro Corp. Flash Drive Bus 003 Device 002: ID 5986:0523 Acer, Inc Bus 003 Device 006: ID 093a:2510 Pixart Imaging, Inc. Optical Mouse Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub PCMCIA Card Info ~~~~~~~~~~~~~~~~~~~ iwconfig ~~~~~~~~~~~~~~~~~~~~~~~~~~~ wlan0 IEEE 802.11bgn ESSID:off/any Mode:Managed Access Point: Not-Associated Tx-Power=20 dBm Retry long limit:7 RTS thr=2347 B Fragment thr:off Power Management:off rfkill ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Interface Soft blocked Hard blocked 1: phy0: Wireless LAN no no 2: hci0: Bluetooth no no lsmod ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ iwlwifi 169932 0 rtl8723be 85118 0 btcoexist 50304 1 rtl8723be rtl8723_common 23361 1 rtl8723be rtl_pci 26690 1 rtl8723be rtlwifi 63475 2 rtl_pci,rtl8723be mac80211 630653 3 rtl_pci,rtlwifi,rtl8723be cfg80211 484040 3 iwlwifi,mac80211,rtlwifi wmi 19177 0 module parameters ~~~~~~~~~~~~~~~~~~ cfg80211 (2): cfg80211_disable_40mhz_24ghz=N | ieee80211_regdom=00 iwlwifi (11): 11n_disable=1 | amsdu_size_8K=0 | antenna_coupling=0 | bt_coex_active=Y | fw_restart=Y | led_mode=0 | nvm_file=(null) | power_level=0 | power_save=N | swcrypto=0 | wd_disable=1 mac80211 (5): beacon_loss_count=7 | ieee80211_default_rc_algo=minstrel_ht | max_nullfunc_tries=2 | max_probe_tries=5 | probe_wait_ms=500 rtl8723be (6): debug=0 | fwlps=Y | ips=Y | msi=N | swenc=N | swlps=N wmi (2): debug_dump_wdg=N | debug_event=N nm-tool ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ State: disconnected ================o=============o===========o==============o=========o===========o==============o=========== Interface & ID | Type | Driver | State | Default | Speed | Support | HW Addr ================o=============o===========o==============o=========o===========o==============o=========== wlan0 | 802.11 WiFi | rtl8723be | disconnected | no | | WEP/WPA/WPA2 | supermolecule: Infra, , Freq 2447 MHz, Rate 54 Mb/s, Strength 60 WPA2 001D73B28EFB: Infra, , Freq 2422 MHz, Rate 54 Mb/s, Strength 77 WPA WPA2 ----------------+-------------+-----------+--------------+---------+-----------+--------------+----------- eth0 | Wired | r8169 | unavailable | no | | | ----------------+-------------+-----------+--------------+---------+-----------+--------------+----------- NetworkManager.state ~~~~~~~~~~~~~~~ [main] NetworkingEnabled=true WirelessEnabled=true WWANEnabled=true WimaxEnabled=true NetworkManager.conf ~~~~~~~~~~~~~~~~ [main] plugins=ifupdown,keyfile,ofono dns=dnsmasq [ifupdown] managed=false NM WiFi Profiles ~~~~~~~~~~~~~~~~~~~ 106F3FF45FE8 : ssid=106F3FF45FE8 | mac-address= | ipv4=auto | ipv6=auto 15403 : ssid=15403 | mac-address= | ipv4=auto | ipv6=auto utroam : ssid=utroam | mac-address= | ipv4=auto | ipv6=auto utroam-1x : ssid=utroam-1x | mac-address= | ipv4=auto interfaces ~~~~~~~~~~~~~~~~~~~~~~~~~ # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback resolv.conf ~~~~~~~~~~~~~~~~~~~~~~~~ Routes & Ping ~~~~~~~~~~~~~~~~~~~~~~ Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface iw reg get ~~~~~~~~~~~~~~~~~~~~~~~~~ (Region : ja_JP.UTF-8) country 00: (2402 - 2472 @ 40), (3, 20) (2457 - 2482 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS (2474 - 2494 @ 20), (3, 20), NO-OFDM, PASSIVE-SCAN, NO-IBSS (5170 - 5250 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS (5735 - 5835 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS iwlist chan ~~~~~~~~~~~~~~~~~~~~~~~~ wlan0 13 channels in total; available frequencies : Channel 01 (2.412 GHz) - 13 (2.472 GHz) iwlist scan ~~~~~~~~~~~~~~~~~~~~~~~~ wlan0 No scan results blacklist ~~~~~~~~~~~~~~~~~~~~~~~~~~ [/etc/modprobe.d/blacklist-ath_pci.conf] blacklist ath_pci modinfo ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ [iwlwifi] filename: /lib/modules/3.13.0-37-generic/kernel/drivers/net/wireless/iwlwifi/iwlwifi.ko version: in-tree: firmware: iwlwifi-100-5.ucode firmware: iwlwifi-1000-5.ucode firmware: iwlwifi-135-6.ucode firmware: iwlwifi-105-6.ucode firmware: iwlwifi-2030-6.ucode firmware: iwlwifi-2000-6.ucode firmware: iwlwifi-5150-2.ucode firmware: iwlwifi-5000-5.ucode firmware: iwlwifi-6000g2b-6.ucode firmware: iwlwifi-6000g2a-5.ucode firmware: iwlwifi-6050-5.ucode firmware: iwlwifi-6000-4.ucode firmware: iwlwifi-7265-7.ucode firmware: iwlwifi-3160-7.ucode firmware: iwlwifi-7260-7.ucode srcversion: C2D0F3DFCA289585C100E36 depends: cfg80211 parm: swcrypto:using crypto in software (default 0 [hardware]) (int) parm: 11n_disable:disable 11n functionality, bitmap: 1: full, 2: disable agg TX, 4: disable agg RX, 8 enable agg TX (uint) parm: amsdu_size_8K:enable 8K amsdu size (default 0) (int) parm: fw_restart:restart firmware in case of error (default true) (bool) parm: antenna_coupling:specify antenna coupling in dB (defualt: 0 dB) (int) parm: wd_disable:Disable stuck queue watchdog timer 0=system default, 1=disable, 2=enable (default: 0) (int) parm: nvm_file:NVM file name (charp) parm: bt_coex_active:enable wifi/bt co-exist (default: enable) (bool) parm: led_mode:0=system default, 1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0) (int) parm: power_save:enable WiFi power management (default: disable) (bool) parm: power_level:default power save level (range from 1 - 5, default: 1) (int) [rtl8723be] filename: /lib/modules/3.13.0-37-generic/kernel/drivers/net/wireless/rtlwifi/rtl8723be/rtl8723be.ko firmware: rtlwifi/rtl8723befw.bin srcversion: 0D59E0301AAA6E5A93400BB depends: rtlwifi,rtl8723-common,rtl_pci,btcoexist,mac80211 parm: swlps:bool parm: swenc:using hardware crypto (default 0 [hardware]) parm: ips:using no link power save (default 1 is open) parm: fwlps:using linked fw control power save (default 1 is open) parm: msi:Set to 1 to use MSI interrupts mode (default 0) parm: debug:Set debug level (0-5) (default 0) (int) [btcoexist] filename: /lib/modules/3.13.0-37-generic/kernel/drivers/net/wireless/rtlwifi/btcoexist/btcoexist.ko srcversion: 3CC61E00E2CEF446293F879 depends: [rtl8723_common] filename: /lib/modules/3.13.0-37-generic/kernel/drivers/net/wireless/rtlwifi/rtl8723com/rtl8723-common.ko srcversion: D1807280DBDC9B8A7EBDAB7 depends: [rtl_pci] filename: /lib/modules/3.13.0-37-generic/kernel/drivers/net/wireless/rtlwifi/rtl_pci.ko srcversion: D5E4890DC428FA5A1BF92DF depends: mac80211,rtlwifi [rtlwifi] filename: /lib/modules/3.13.0-37-generic/kernel/drivers/net/wireless/rtlwifi/rtlwifi.ko srcversion: E1F4663325225EE8DBA54CA depends: mac80211,cfg80211 [mac80211] filename: /lib/modules/3.13.0-37-generic/kernel/net/mac80211/mac80211.ko srcversion: B822641624778B987844F6F depends: cfg80211 parm: max_nullfunc_tries:Maximum nullfunc tx tries before disconnecting (reason 4). (int) parm: max_probe_tries:Maximum probe tries before disconnecting (reason 4). (int) parm: beacon_loss_count:Number of beacon intervals before we decide beacon was lost. (int) parm: probe_wait_ms:Maximum time(ms) to wait for probe response before disconnecting (reason 4). (int) parm: ieee80211_default_rc_algo:Default rate control algorithm for mac80211 to use (charp) [cfg80211] filename: /lib/modules/3.13.0-37-generic/kernel/net/wireless/cfg80211.ko srcversion: C2478077E22138832B71659 depends: parm: ieee80211_regdom:IEEE 802.11 regulatory domain code (charp) parm: cfg80211_disable_40mhz_24ghz:Disable 40MHz support in the 2.4GHz band (bool) [wmi] filename: /lib/modules/3.13.0-37-generic/kernel/drivers/platform/x86/wmi.ko srcversion: CED5410F008DC70DF5F064B depends: parm: debug_event:Log WMI Events [0/1] (bool) parm: debug_dump_wdg:Dump available WMI interfaces [0/1] (bool) udev rules ~~~~~~~~~~~~~~~~~~~~~~~~~ # PCI device 0x10ec:0x8168 (r8169) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0" # PCI device 0x10ec:0xb723 (rtl8723be) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0" Custom files/entries ~~~~~~~~~~~~~~~ /etc/modules : Default /etc/rc.local : Not Default /etc/modprobe.d : Not Default /etc/pm/(cnf|pw|sl) : Not Default [/etc/rc.local] echo 1100 > /sys/class/backlight/intel_backlight/brightness exit 0 [/etc/modprobe.d] iwlwifi.conf : remove iwlwifi \ (/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \ && /sbin/modprobe -r mac80211 options iwlwifi 11n_disable=1 iwlwifi.conf~ : remove iwlwifi \ (/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \ && /sbin/modprobe -r mac80211 mlx4.conf : softdep mlx4_core post: mlx4_en [/etc/pm/power.d/wireless] #!/bin/sh /sbin/iwconfig wlan0 power off Kernel boot line ~~~~~~~~~~~~~~~~~~~ BOOT_IMAGE=/boot/vmlinuz-3.13.0-37-generic.efi.signed root=UUID=ee1f131b-08b0-429f-8912-7a3f287c793b ro quiet splash vt.handoff=7 dmesg ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ [ 0.621462] microcode: Microcode Update Driver: v2.00 , Peter Oruba [ 0.621709] audit: initializing netlink socket (disabled) [ 0.790834] r8169 Gigabit Ethernet driver 2.3LK-NAPI loaded [ 1.357364] psmouse serio1: elantech: assuming hardware version 4 (with firmware version 0x461f16) [ 2.766506] wmi: Mapper loaded [ 2.826782] rtl8723be: Using firmware rtlwifi/rtl8723befw.bin [ 2.839363] ieee80211 phy0: Selected rate control algorithm 'rtl_rc' [ 2.839551] rtlwifi: wireless switch is on [ 4.546965] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 [ 5.190130] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 5.190320] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 90.622664] wlan0: authenticate with [ 90.641893] wlan0: send auth to (try 1/3) [ 90.643488] wlan0: authenticated [ 90.645396] wlan0: associate with (try 1/3) [ 90.648479] wlan0: RX AssocResp from (capab=0x631 status=1 aid=2) [ 90.648488] wlan0: denied association (code=1) [ 90.667814] wlan0: deauthenticating from by local choice (reason=3) [ 90.794241] wlan0: authenticate with [ 90.804439] wlan0: send auth to (try 1/3) [ 90.820868] wlan0: authenticated [ 90.821302] wlan0: associate with (try 1/3) [ 90.826483] wlan0: RX AssocResp from (capab=0x431 status=0 aid=1) [ 90.826668] wlan0: associated [ 90.826688] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 90.830500] wlan0: deauthenticated from (Reason: 3) [ 92.261378] wlan0: authenticate with [ 92.280916] wlan0: send auth to (try 1/3) [ 92.282342] wlan0: authenticated [ 92.284475] wlan0: associate with (try 1/3) [ 92.287446] wlan0: RX AssocResp from (capab=0x431 status=0 aid=1) [ 92.287733] wlan0: associated [ 106.832962] wlan0: authenticate with [ 106.843208] wlan0: send auth to (try 1/3) [ 106.848511] wlan0: authenticated [ 106.852023] wlan0: associate with (try 1/3) [ 106.859249] wlan0: RX AssocResp from (capab=0x431 status=0 aid=2) [ 106.859404] wlan0: associated [ 548.150121] wlan0: authenticate with [ 548.160402] wlan0: send auth to (try 1/3) [ 548.178327] wlan0: authenticated [ 548.181277] wlan0: associate with (try 1/3) [ 548.189450] wlan0: RX AssocResp from (capab=0x431 status=0 aid=1) [ 548.189625] wlan0: associated [ 558.311342] wlan0: authenticate with [ 558.321619] wlan0: send auth to (try 1/3) [ 558.323667] wlan0: authenticated [ 558.326548] wlan0: associate with (try 1/3) [ 558.329850] wlan0: RX AssocResp from (capab=0x431 status=0 aid=2) [ 558.330015] wlan0: associated [ 1091.372951] wlan0: deauthenticating from by local choice (reason=3) [ 1094.309771] rtlwifi: wireless switch is on [ 1097.560361] rtl8723be 0000:09:00.0: no hotplug settings from platform [ 1098.357498] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 1100.059861] wlan0: authenticate with [ 1100.079734] wlan0: send auth to (try 1/3) [ 1100.082123] wlan0: authenticated [ 1100.083299] wlan0: associate with (try 1/3) [ 1100.086300] wlan0: RX AssocResp from (capab=0x431 status=0 aid=4) [ 1100.086474] wlan0: associated [ 1100.086510] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 1100.251871] wlan0: deauthenticating from by local choice (reason=2) [ 1100.285453] wlan0: authenticate with [ 1100.295648] wlan0: send auth to (try 1/3) [ 1100.298036] wlan0: authenticated [ 1100.299060] wlan0: associate with (try 1/3) [ 1100.302358] wlan0: RX AssocResp from (capab=0x431 status=0 aid=4) [ 1100.302519] wlan0: associated [ 1126.163709] wlan0: authenticate with [ 1126.173858] wlan0: send auth to (try 1/3) [ 1126.175735] wlan0: authenticated [ 1126.179692] wlan0: associate with (try 1/3) [ 1126.195366] wlan0: RX AssocResp from (capab=0x431 status=0 aid=2) [ 1126.195526] wlan0: associated [ 1204.358127] wlan0: authenticate with [ 1204.368261] wlan0: send auth to (try 1/3) [ 1204.370628] wlan0: authenticated [ 1204.373013] wlan0: associate with (try 1/3) [ 1204.376126] wlan0: RX AssocResp from (capab=0x431 status=0 aid=4) [ 1204.376283] wlan0: associated [ 1314.956600] wlan0: authenticate with [ 1314.966758] wlan0: direct probe to (try 1/3) [ 1315.167841] wlan0: direct probe to (try 2/3) [ 1315.371627] wlan0: direct probe to (try 3/3) [ 1315.575434] wlan0: authentication with timed out [ 1316.655061] wlan0: authenticate with [ 1316.665245] wlan0: send auth to (try 1/3) [ 1316.766173] wlan0: send auth to (try 2/3) [ 1316.870062] wlan0: send auth to (try 3/3) [ 1316.973936] wlan0: authentication with timed out [ 1331.864836] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready ======== Done ======== 先感谢您。
顺便说一句，我正在研究Ubuntu因为我发现它比试图应对Windows更有趣。 由于Ask Ubuntu社区，我可以决定将我的主平台切换到Ubuntu。 谢谢所有Ubuntu极客。
我建议你尝试一下驱动程序参数。 请打开终端并执行：
sudo -i echo "options rtl8723be fwlps=0" > /etc/modprobe.d/rtl8723be.conf modprobe -r rtl8723be modprobe rtl8723be exit
它可能需要重新启动。 有什么改进？
我在/etc/modprobe.d/iwlwifi.conf添加了以下行：
options iwlwifi 11n_disable=1 options iwlwifi swcrypto=1
而虫子消失了！